DAQ systems

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FELIX is one of the main components of the new ATLAS TDAQ architecture. This DAQ system will be installed in all the ATLAS sub-detectors in Run 4.

At Nikhef, a setup has been assembled in lab N221 with the purpose of training before petal arrival. In this setup, shown below, Phase-I FELIX (FLX-712) is used.

Due to the lack of petals at the time, the first sensor to test was an old barrel module with one ABC chip and one HCC chip, but no sensing material and no AMAC chip (there is a wire bond in its place to provide power). The VLDB+ with the Nikhef adapter board substitutes the EoS board, since the module has no AMAC chip, there is no external connection between the VLDB+ and the Nikhef adapter board, but whenever we use a module with it, we will need to connect them through a mini-HDMI cable. The lpGBT on the VLDB+ is not efused. For more information about this training setup, you can contact Andrea García Alonso ([[1]]).

Later on in 2023, the PPB-R5-petal from Vancouver arrived to Nikhef. This petal is empty except for the R5 module on the top side.

FELIX servers in Nikhef lab N221. Used for FELIX development and tests. Canche is the third from the bottom, first used for lab tests when getting familiar with FELIX. None in this picture is the ITk-server used for petal reception/testing.

PPB R5 Vancouver petal at Nikhef, connected to FELIX and LV PSU. July 2024.

FELIX setup in lab N221 at Nikhef (September 2022). At that time, it was connected to the FELIX server called canche, later on this would change to the ITk server that arrived from CERN in November that year. The module for test is the old barrel module without sensing material.

In September 2024, the PPB-R5 petal from Vancouver was installed inside the Nikhef petal test box:

September 2024 PPB-R5-petal Nikhef petal test box

How to connect to FELIX

If you have a single module to test, follow these FELIX instructions.

If you have a PETAL, follow the following instructions: FELIX instructions for Petals.

Links

Useful links I gathered during the first months working with the FELIX system:

The ATLAS FELIX project webpage

https://atlas-project-felix.web.cern.ch/atlas-project-felix/

FELIX manual latest version

https://atlas-project-felix.web.cern.ch/atlas-project-felix/dev/staging/www/user/felix-user-manual/versions/Latest/

ATLAS FELIX lab (also called playground) at Nikhef

https://redmine.nikhef.nl/et/projects/atlas-felix/wiki/Atlas_setup_in_H148

Latest FELIX Phase II PDR indico page (status and introduction of the software, hardware and test activities)

https://indico.cern.ch/event/1108368/

TTC specs on edms

https://edms.cern.ch/document/2379978/1

For further reading about timing, trigger and control

relevant page in the TDAQ phase II TDR: https://cds.cern.ch/record/2285584/files/ATLAS-TDR-029.pdf#page=105

LPGBT webpage

https://lpgbt.web.cern.ch/lpgbt/

For access to the lpgbtv1 manual, subscribe to lpgbt-users@cern.ch egroup

Other egroups (meetings, information, updates etc): atlas-tdaq@cern.ch, atlas-tdaq-software@cern.ch, atlas-tdaq-felix-users@cern.ch, atlas-tdaq-felix-developers@cern.ch

Tests at CERN SR1

https://twiki.cern.ch/twiki/bin/viewauth/Atlas/FelixStripsTestsAtSR1, https://twiki.cern.ch/twiki/bin/viewauth/Atlas/FelixStripsTestsAtSR1#lpGBT_configuration_with_VLDB

Twiki page of the DAQ Demonstrator

https://twiki.cern.ch/twiki/bin/viewauth/Atlas/HGTDDaqDemonstratorEMU

Raspberry Pi 4

https://pigbt.web.cern.ch/manual/quick_start.html#connect-to-pigbt-wired-network

lpGBT

https://lpgbt.web.cern.ch/lpgbt/v0/introduction.html

FELIX Software for testing

https://gitlab.cern.ch/itk-felix-sw/itk-felix-sw/-/blob/master/Readme.md

ABCStar

https://edms.cern.ch/ui/file/1809573/1/ABCStar_Spec_07.66.pdf

HCCStar

https://edms.cern.ch/ui/file/1809590/1/HCCStar_Spec_10.pdf